Accumulator-plate.



PATBNTED JAN. 20,- 1903.

W. KRAUSHAAR. ACGUMULATOR PLATE. APPLIOATION FILED JUNI: zo, l1902.

H0 MODEL.

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UNITED STATESv PATENT OFFICE.

' WILHELM KEAUsIIAAE, oF NEUMIIL, GERMANY.

ACCUMULATOR-PLATE.

SPECIFICATION forming; part of Letters Eatent No. 718,774, dated January 20, 1903.

Application filed June 20, 1902. Serial No. 112,438. (No model.)

To all whom, it may concern.-

Beit known that I, WILHELM KRAUSHAAE, a subject of the German Emperor, residing at Neum iihl, Rheinland, Germany, have invented certain new and useful Improvements in Accumulator-Plates, of which the following is a specification.

My invention relates to accumulatorplates-that is, to grids of the kind used in storage batteries.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the gures.

Figure I is a fragmentary elevation of my improved grid, and Fig. 2 is a vertical section of the same.

In my improved battery-plate there is provided a leaden plate which is furnished in the usual way with thin ribs or strips of lead which are cut through at certain points. Myimproved battery-plate diers from others of this sort in that the mutilations or cuts in one rib or strip are opposite to the mid-point between the mutilations or cutsin the adjoining ribs or strips. Further, the several parts of the two adjoining ribs or strips are connected together by strips at right angles to them and of the same height, which latter strips are placed opposite the mid-point between the corresponding joining-strips between the next pair of ribs. By this arrangement by the numerous cuts the several ribs or thin strips can be separated into small pieces without severely weakening any point of the plate, as is the case where the lholes go right through, also any part of the plate is better enabled to expand, and the greatest possible mechanical strength is obtained with the smallest weight of lead. A further advantage of the arrangement of cuts is that such a plate can be manufactured by casting more easily, while in the case of the cuts which go right through the core forming these holes prevents the ilowing of the molten lead. This objection does not appear in the present arrangement, as here the lead as soon as it comes to a part ofthe core can flow through the opening in the neighboring rib, as is shown by the arrow in the drawings, Figs. 1 and 2. In these drawings the thin ribs are separatedby the cuts c into separate pieces a. The ribs b connect the opposite parts d of two adjoining strips or ribs, as before explained. The plate may be cast still more easily if the cuts of the thin ribs or strips are arranged on both sides of the plate. In this case also a weakening is avoided. The flow of the molten lead follows the arrow in Fig. 2. Without this arrangement of cuts it would not be possible to weaken the core of the plate to its minimum strength orto altogether omit it.

What I claim, and desire to secure by Letters Patent of the United States, is-

I. An accumulator-plate consisting of alead plate with thin ribs or strips on both sides thereof which are divided by cuts, characterized by the fact that the cuts c which divide the ribs or strips into several parts d are opposite to a point between the cuts in the adjoining strips and that the parts a, of two neighboring ribs are united by ribs of equal hei ght similarly arranged to the cuts with the object of increasing the effective surface and to sufficiently stiffen the electrode, and at the same time decrease the weight,

2. An accumulator-plate, comprising a grid having longitudinal iiat ribs, said ribs being connected together by a web integral therewith, and being provided with mutilations disposed upon opposite sides of said web.

3. An accumulator-plate, comprising a grid having longitudinal fiat ribs, said ribs being connected together by a web integral therewith, and being provided with mutilations disposed upon opposite sides of said web, said mutilations upon opposite sides of said web being so disposedas to alternate with each other along the general length of said ribs.

4. An accumulator-plate, comprising a grid having flat longitudinal ribs, each rib being provided with mutilations upon its opposite edges, the mutilations upon one edge being spaced apart and so arranged as to alternate with the mutilations upon the opposite edge of said rib, whereby a mechanism of strength and of available service is obtained together with the minimum of material.

In testimony whereof I have hereunto set my hand in the presence of two witnesses.

WILHELM KRAUSHAAR.

Vitnesses:

A. M. IIENSLEY, OHAs. F. HENSLEY.

IOO 

